CS4299-BQZ Cirrus Logic Inc, CS4299-BQZ Datasheet - Page 23

• Manufacturer Part Number: CS4299-BQZ
• Description: IC CODEC AC'97 W/SRC 48-LQFP
• Manufacturer: Cirrus Logic Inc
• Series: SoundFusion™r
• Type: Audio Codec '97r

Specifications of CS4299-BQZ

• Data Interface: Serial
• Resolution (bits): 18 b, 20 b
• Number Of Adcs / Dacs: 1 / 1
• Sigma Delta: Yes
• Voltage - Supply, Analog: 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.3 V ~ 5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Audio Codec Type: Stereo
• No. Of Adcs: 1
• No. Of Dacs: 1
• No. Of Input Channels: 8
• No. Of Output Channels: 3
• Adc / Dac Resolution: 20bit
• Sampling Rate: 48kSPS
• Ic Interface Type: Serial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS319PP6
4.7
Mute
GN[4:0]
20dB
Default
Mute
D15
Microphone Volume Register (Index 0Eh)
D14
0
D13
0
Microphone Mute. Setting this bit mutes the MIC1 or MIC2 signal. The selection of the MIC1 or
MIC2 input pin is controlled by the MS bit in the General Purpose Register (Index 20h).
Microphone Volume Control. The GN[4:0] bits are used to control the gain level of the Micro-
phone input source to the Input Mixer. Each step corresponds to 1.5 dB gain adjustment, with
01000 = 0 dB. The total range is +12 dB to -34.5 dB gain. See Table 3 for further details.
Microphone 20 dB Boost. When ‘set’, the 20dB bit enables the +20 dB microphone boost block.
This bit allows for variable boost of 0 dB or +20 dB. Table 3 summarizes this behavior.
8008h. This value corresponds to 0 dB gain and Mute ‘set’.
D12
0
D11
0
D10
Table 3. Microphone Input Gain Values
0
GN[4:0]
00000
00001
01000
01001
00111
11111
…
…
D9
0
D8
+12.0 dB
+10.5 dB
20dB = 0
-34.5 dB
0
+1.5 dB
-1.5 dB
0.0 dB
…
…
Gain Level
D7
0
20dB
20dB = 1
+32.0 dB
+30.5 dB
+21.5 dB
+20.0 dB
+18.5 dB
-14.5 dB
D6
...
...
D5
0
GN4
D4
GN3
D3
GN2
D2
CS4299
GN1
D1
CS4299
GN0
D0
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